140505630 has 16 divisors (see below), whose sum is σ = 337213584. Its totient is φ = 37468160.

The previous prime is 140505619. The next prime is 140505661. The reversal of 140505630 is 36505041.

It is a self number, because there is not a number n which added to its sum of digits gives 140505630.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2341731 + ... + 2341790.

It is an arithmetic number, because the mean of its divisors is an integer number (21075849).

Almost surely, 2^140505630 is an apocalyptic number.

140505630 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

140505630 is an abundant number, since it is smaller than the sum of its proper divisors (196707954).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

140505630 is a wasteful number, since it uses less digits than its factorization.

140505630 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4683531.

The product of its (nonzero) digits is 1800, while the sum is 24.

The square root of 140505630 is about 11853.5070759670. The cubic root of 140505630 is about 519.8737736025.

The spelling of 140505630 in words is "one hundred forty million, five hundred five thousand, six hundred thirty".